﻿     <p>An <em>IfcPlacement</em> is an abstract supertype of placement
      subtypes that define the location of an item, or an entire
      shape representation, and provide its orientation. All
      placement subtypes define right-handed Cartesian coordinate
      systems and do not allow mirroring.
    </p>
    <blockquote class="note">
      NOTE&nbsp; Cartesian transformations including mirroring and
      scaling are supported by
      <em>IfcCartesianTransformationOperator</em>
    </blockquote>
    <blockquote class="extDef">
      NOTE&nbsp; Definition according to ISO/CD 10303-42:1992<br>
      A placement locates a geometric item with respect to the
      coordinate system of its geometric context. It locates the
      item to be defined and, in the case of the axis placement
      subtypes, gives its orientation.
    </blockquote>
    <blockquote class="note">
      NOTE&nbsp; Entity adapted from
      <strong>placement</strong> defined in ISO 10303-42.
    </blockquote>
    <blockquote class="history">
      HISTORY&nbsp; New entity in IFC1.0
    </blockquote>